Jizo statues in the are of the ninja in Iga 伊賀忍者.
The Iga and Koga fighters were the only ones to resist the onslaught of Oda Nobunaga to unify the area. They had promised to help each other to defent themselves. Nobunaga first defeated the Koga and then marched on into Igaland.
The Iga seemed to be driven back and then he came back with a large army of 45000 soldiers and defeated them.
The area with stone statued, which were also beheaded by the soldiers to show their might, are still to be seen today.

Kubikiri Jizo Son 首切地蔵尊The fugitives of Heike (the Taira clan), who were defeated in the battle of the Uji River and driven into the mountains, died a violent death in present-day Tanba City in 1184. Feeling sorry for them, the villagers erected several stones and placed flowers in front of them to pray for the repose of their souls.
By and by the stones became famous as Jizo statues, which have the power to fulfill people’s wishes. 3 statues of Jizo with no heads stand side by side on the stone steps and 7 in the small hall.
Those statues are known for fulfilling the wishes concerning the head such as academic accomplishment, prevention of becoming forgetful with age, and recovery from illness. A lot of students taking an entrance examination to a university come to pray for these Jizo statues during the season of the entrance exams.
On the days of Jizo Festivals held in March and September every year, a lot of visitors come to the mountain, which is also known as a nice place for hiking.source : nippon-kichi.jp
丹波市山南町

This statue is 3.6 meters high and was erected in 1714.
It has been put up for those who could not get the final Buddhist rites in the time of dying. They were executed. See also below, kubizuka.
At the Kotsukappara 小塚原刑場 execution grounds in Minami Senju, Edo.